Do no restrict water with sour crop, or massage the crop. You only would massage a hard impacted crop. She needs water and electrolytes might be good.. Food can be withheld for a day. I would give some antifungal miconazole or Monistat cream orally 1/2 inch twice a day. Check her crop again each am before she eats or drinks. By tomorrow, you could offer some very soft watery egg.
Her dark green poops mean that she is not getting enough food, and that is do to her crop slowing down. Chickens drink a lot of water with crop problems. She may have something else causing her crop problem, and that could be a reproductive disorder such as salpingitis. Calcium can help to pass a stuck egg or perhaps a lash egg.
I would recommend reading this good article on treating crop disorders:
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/